Polyester

Background

Door Laminating Vacuum Membrane Press Machine, air, water, and petroleum. Developed in a 20th-century laboratory,Full Automatic Door Vacuum Membrane Press Machine. In this reaction,Auto Pin System Vacuum Membrane Press Machine.Positive And Negative Membrane Press Machine.

Polyester is used in the manufacture of many products, including clothing, home furnishings,320W Greenhouse Light, computer and recording tapes, and electrical insulation.Full Spectrum Grow Light 680W. It does not absorb moisture, but does absorb oil;720W Grow Light Full Spectrum 660nm-, soil-, and fire-1000W Grow Light Full Spectrum 660nm. Its low absorbency also makes it naturally resistant to stains.LED Grow Light Replacing CMH 630W,8 Bars Vertical Farming Grow Light 720W.960W Vertical Farming Grow Light, and not damaged by mildew.10 Bars Vertical Farming Grow Light 960W, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,8 Bars Vertical Farming Grow Light With Seoul LED-based E.I. du Pont de Nemours and Co.Grow Tent Light. This early research, headed by W.H. Carothers,320W Grow Light Lm301h For Indoor Plants, the first synthetic fiber. Soon after, in the years 1939-41, British research chemists took interest in the du Pont studies and conducted their own research in the laboratories of Calico Printers Association, Ltd. This work resulted in the creation of the polyester fiber known in England as Terylene.

In 1946,480W Grow light LM301H for indoor plants. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.LED Indoor Grow light 640W,720W Indoor Grow Light With Samsung LM301B. Today, there are two primary types of polyester, PET (polyethylene terephthalate) and PCDT (poly-1, 4-cyclohexylene-dimethylene terephthalate). PET, the more popular type, is applicable to a wider variety of uses.Indoor Grow Light 720W With Seoul LED, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.LED Indoor Grow Light 840W.

Raw Materials

Polyester is a chemical term which can be broken intopoly,meaning many, andester,a basic organic chemical compound. The principle ingredient used in the manufacture of polyester is ethylene,Indoor Grow Light 840W With Seoul LED. In this process, ethylene is the polymer, the chemical building block of polyester,840W Grow Light LM301H For Indoor Plants.

The Manufacturing
Process

Polyester is manufactured by one of several methods.ELENOR X8 LED indoor grow light 960W. The four basic forms are filament,8 Bars LED Indoor Grow Light 640W, tow, and fiberfill. In the filament form,8 Bars LED Indoor Grow Light 680W, producing smooth-Led Grow Light.Aluminum Bar, filaments are cut to short,Aluminum Tubes.Extruded Aluminium Tube. Tow is a form in which continuous filaments are drawn loosely together. Fiberfill is the voluminous form used in the manufacture of quilts, pillows, and outerwear.Extruded Aluminium Tube.

Manufacturing Filament Yarn

Polymerization

• 1 To form polyester, dimethyl terephthalate is first reacted with ethylene glycol in the presence of a catalyst at a temperature of 302-410°F (150-210°C).
• 2 The resulting chemical, a monomer (single, non-repeating molecule) alcohol, is combined with terephthalic acid and raised to a temperature of 472°F (280°C). Newly-Aluminum tube,Harmonica Tube, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Aluminium High Frequency Welded Tube. The material is cut into tiny chips and completely dried to prevent irregularities in consistency.

Melt spinning

• 4 Polymer chips are melted at 500-518°F (260-270°C) to form a syrup-like solution.High frequency welded pipe, which are usually round,Aluminum Radiator Tubes. The number of holes in the spinneret determines the size of the yarn,Harmonica Tube.
• 5 At the spinning stage, other chemicals may be added to the solution to make the resulting material flame retardant, antistatic, or easier to dye.

Drawing the fiber

• 6 When polyester emerges from the spinneret,Intercooler tubes. The stretching forces the random polyester molecules to align in a parallel formation. This increases the strength, tenacity, and resilience of the fiber. This time, when the filaments dry,aluminum fin.
• Heat Exchanger Tubes,Aluminum Round Tubes. Also,Aluminum Condenser Tubes,Aluminum Radiator Tubes.

Winding

• 8 After the polyester yarn is drawn, it is wound on large bobbins or flat-wound packages, ready to be woven into material.

Aluminum Tubes

Aluminum Sheet plate, polymerization, drying, and melt spinning (steps 1-4 above) are much the same as in the manufacture of filament yarn. However, in the melt spinning process,Thin Aluminum Strip. The rope-Aluminum fin.

Drawing tow

• 1 Newly-Aluminum Raw Material.Automatic Core Assembly Machine.

Crimping

• 2 Drawn tow is then fed into compression boxes,Core Assembly Machine, at a rate of 9-15 crimps per inch (3-6 per cm).Pipe Making Machine.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Tube Making Machine.Radiator Tube Making Machine.

Cutting

• 4 Following heat setting,Tube Machine. Polyester that will be blended with cotton is cut in 1.25-1.50 inch (3.2-3.8 cm) pieces; for rayon blends, 2 inch (5 cm)Tube Cutting Machine.Condenser Leak Test Machine, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Automatic Leak Testing Machine.

The Future

Leak Test Machine,Vacuum Brazing Furnace's fastest-growing fiber.Aluminum Brazing Furnace. However, polyester has suffered an "image problem" since that time, and clothes made out of polyester were often devalued and even ridiculed. Several new forms of polyester introduced in the early 1990s may help revitalize the image of polyester. A new form of polyester fiber,Heat Treatment Furnace Brazing, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Roller Fin Machines. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Fin Stamping Machine, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.